Jbqbert emeisch



R. NEISCH.

Limekiln.

No. 11,529. A Pafented Aug. 15, 1854.

N. PETERS, Phowuchegmpmr. wnsningum n. C.

AROBlSlR'l' iNiEISGH, @OF ;NW WORK, lYU.

provements -iin #Rime-kilns; land ll ido .hereby declare thefollowingito beza ttull, clearand e-Xact .description of the fsame, `reffntence ibeing had `lto ithe .iaccompanying drawings, .iin whichfFigurel, 'represents an elevation. Eig

2, represents a Merticalwcentral section. Fig 3, `rrepresents :a horizontal `section. taken through 'the line iE, LE, o'f Eig. `2.. Fig. `2l,

represents fa. horizontalfsection takenthrough the line 1F, Fpof EigLQ. Eigs andati, are horizontal sections taken respectively `at the lines 0,10, @nu :npnodf rig. 2, and rig. `7,

,represents a section through the lre :chamber hearth, ash-pit, rand doorlforremoving the lime, and'showinglthe construction of the arches over the fire chamber, the opening of the cupola,the iirepassages, iues &c.

vSimilar letters in the several figures denote like parts.

The nature of myinvention relates first, to the introduction of atmospheric air, to supply or aid combustion, from above the hearth and fire chamber. Also in the com` bination of the arched fire chamber, with the inclined and curved hearth, for reflecting and concentrating the heat.

To enable others skilled in the art to make and use my invention I will proceed to describe the same with reference to the drawm s.

1glhe cupola may be constructed in any of the well known forms, gradually increasing in diameter from the top toward the bottom, until within about seven feet of the base, and from that point gradually decreasing to the bottom.

The working of the kiln may be divided into three separate operations viz: the lling in, or charging of the cupola, the burning of the limestone, and the removing or drawing of the burnt lime. The manner of filling and drawing are well known, and need not bev particularly described.

The bottom a, of the cipola, G- whereon the burnt lime is continually burning, is so constructed as that the lime or burnt stone will slide toward the door a, from whence it can be readily removed when cooled. Two

separate iron doors prevent the atmospheric air from communicating with the interior of the cupola G.

llrelburning of ithe stoire =is what el regard :as the l,principal feature in` :my :inven- 1 tion, rand will confine any description more particularly to'thatzparboffit.

`:The ifuellisted into .athefiires throughthe doors oriopienings fithehearthorflgrateibars i L of which ifres, rare :so .inclined ftoward the center for rounded fasztoacause the fuelito tall together, `where ut :is xmore :readily `raked and-divested: of Jtheiashes, .which are removed through the openings c :after ithey` .have `become coc-l, .and given up theireheatzto` aug- 1 ment thel'fireae `represents aasupportingbbar for. sustainingthe" hearth sin its center, ,land d are `openings zthrough which the 'fire may be :regulated` The heat arisingfifrom the burnt lime-` ;sto-ne lying in the bottom r., and 'the air which .fmay 'find .its '.w ay :through the doors c, 3 is `carried up `through` the 'iues 4b, underneath the grates or hearth, and thus furnishes `heated air to promote the combustion. The first series `of flues b, b, terminate in the ash box c, and then branch off, as seen in Fig. 2, from the ash boX, and lead to the fire, their entrance into the re chamber being seen in Fig. 7. And when the burnt lime is drawn from a the flues Z), b, may be closed up so as to prevent any cold air from passing up to the fires, one of first passing` in contact with the heated gases.

The principal part of the air required for supplying the fires is brought through the air fiues g', and this I consider a leading feature in my invention. The usual practice is to bring the air for supplying combustion underneath the hearth, and it enters the fire cold. By bringing it from above the hearth, the air is furnished in a heated state by coming in contact with the heated flame or gases before it reaches the center of combustion. The radiating heat is also gathered up by the cold air passing through the fire chamber to reach the fire, and this is due somewhat to the construction of the fire chamber f. The burning up of the gases `and heated products is also more certain,`

ioo

The quantity of atmospheric air descending through the passage g can be regulated .by a cap or register, as seen in F ig. 2, and

' together at the last opening in the passage z' from whence four chimneys with their opposite openings la are built to the top of the cupola their tops being provided With caps for regulating the quantity of draft through them, said caps being represented at 7c Fig. 2. If found essential tWo or more passages such as at z' might be made in connection With the fire passages L.

To make the cupola more secure and perticularly to guard against expanding, cracking, orinjury by the heat, a dead space m is formed between the inner and the outer Wall Z of the cupola Which space may be lilled with ashes, sand or some other nonconducting substance; or it may be an air space Aand unlled, and -in the latter case, the heat Which might fill this dead space, can be if desired 4drawn into the cupola G. The

same might be lsaid of the so called dead l space S, between both arches over the fire chamber f to permit the expansion of the lower arch, and draw the heat to the cupola. The parts of the Wall marked m, are about three feet thick, and are bound into the outer and inner Walls l, Z and thus give great strength to the Whole kiln or stack. On the top of the cupola is a balustrade n, to protec-t the operator in illing in the stone. And to observe the progress of the burning of the limestone in the cupola G several holes marked 0 are left in the Walls at various points. 'The Whole kiln may also be strengthened by binding it around With iron or Wooden beams or bars p.

Having thus fully described the nature of my invention What I claim therein as new and desire to secure by Letters Patent s,-

l. In combination with the fire chamber f of the air conducting passage g for the purpose of bringing in the air from above the lire substantially as described.

2. I also claim in combination With the arched lire chamber f, the inclined and curved hearth e, for concentrating the fuel and throwingthe flame or heat toward the stack, substantially as described.

" ROBERT NEISCH.

Witnesses A. B. SrroUeHToN, Tiros., H. UPPERMAN.l 

